/**
 * Copyright 2007-2008 Vidar Svansson
 *
 * This file is part of JAdapter.
 *
 * JAdapter is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * JAdapter is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with JAdapter.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.jadapter.func;

/**
 * Procedure (function that does not return anything).
 * 
 * @author Vidar Svansson
 *
 * @param <T>
 * 
 * @since 0.1
 */
public abstract class Proc<T> implements Lambda<Object , T>{

    private Object value;
    
    public Object x(T t) {
        exec(t);
        return null;
    }
        
    protected Object value(){return value;}
    
    protected void value(Object value){
        this.value = value;
    }
    
    public abstract void exec(T t);

    static abstract class NoArg<U> extends Proc<U> {

        @Override
        public void exec(U u) {
            exec();      
        }
        
        public abstract void exec();
    
    }    
}
